System requirements

The program package QIRM is a gnuzip compressed tar file `qirm.3.tar.gz' (ca. 4MB/40MB). In addition, `qirm_data.3.tar.gz' contains further input data which are prepared to calculate some other observables.
This documentation is presented here also as postscript file `qirm_doku.3.ps'. A recommended installation and a first trial are found in chapt. 1.2, cf. README file.
The following requirements with respect to the system and the user setup are necessary for the use of QIRM:

• A FORTRAN90 Compiler must be available.
• The standard shell for batch should be the sh shell or equivalent.
• Batch uses NQS Network Queuing Env. (currently version 3.3).
• Special properties of the system for compilation have to be inserted in the file `Makedefault.<System>' analogously to the example of `Makedefault.t3e' which may serve as prototype. The file `Makedefault.<System>' has to be copied into file Makedefault which is loaded by default through `Makefile'.
• The environment variable `TMPDIR' should be set to a temporary working directory.
• The analysis of performance resides on the tool apprentice; all necessary informations per job are collected in the directory `qmc/APP'.
• If performance shall be analyzed by some other tool than apprentice, the respective library has to be loaded by the file `Makedefault' (see above), i.e. use `-lxxx´ instead of `-lapp´ for library with name `xxx´, via the macro `QMCdslink'. The compiler option for switching to the performance analysis uses the macro `APP´ with `APP=-eA´.
• The use of compiler directives may accelerate the program esentially. The directives actually are introduced by `CDIR$ CACHE_BYPASS <list of variables>' in the file `hrnaqd_cdir.for'. They have to be adapted for different environments or to be switched off through replacing it by a modul `hrnaqd' (see chapt. 1.2).
• The generation of the pseudo random numbers can be controlled via the macro `RAN´. One sets `RAN=hrt3eran.' in order to use `ranset(i), ranf()' and `RAN=hrforran.' to use `ran(i)'.
• As default the routines `errexit(), my_pe(), num_pes(), barrier()' which are extensions of the CRAY f90 compiler are expected. Replacing these is achieved through `Makedefault.<system>', see chapt. 1.5.
• The libraries LAPACK and NAG are required.
• MPI is used for communication between nodes, actually with the package MPICH version 1.2.0. If MPI is not implemented the modul `hrmmpi' may be replaced by the dummy `hrmmpi_dum' (see chapt. 1.5). In this case, the regression analysis in the frame work of Weighted Least Square Fits has to be postponed to the postprocessing.